Plan saved to docs/plans/2026-03-02-ping-command.md.

The implementation plan covers 4 tasks (13 checklist items) across 4 files:

• Standalone script pattern chosen (matches 100+ existing commands) over inline-in-router (would violate architecture)
• echo "pong" with explicit exit 0 — bare stdout, no helpers needed
• 6 test cases: output match, exit code 0, --help, -h, --version, invalid option → exit 1
• VERSION="3.2.4" to match package.json

• Router entry verified by testing bash scripts/sw ping after edit
• Stdout target: bare echo with no stderr redirect
• Test registration: insert after sw-hello-test.sh in the npm test chain

Plan complete and saved to docs/plans/2026-03-02-ping-command.md. Two execution options:

1. Subagent-Driven (this session) — I dispatch a fresh subagent per task, review between tasks

2. Parallel Session (separate) — Open new session with executing-plans skill for batch execution

Which approach?